Office chair



FIG. 1 is a front perspective view of the office chair in accordance with the present invention;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The portions of the design shown in broken line are present for illustrative purposes only and form no part of the claimed design. 

The ornamental design for office chair, as shown and described. 